JP2021506181A - 無線通信システムにおいてpucch上でアップリンク制御情報を送受信するための方法およびそのための装置 - Google Patents
無線通信システムにおいてpucch上でアップリンク制御情報を送受信するための方法およびそのための装置 Download PDFInfo
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Abstract
Description
であり、
である。ダウンリンク(downlink)およびアップリンク(uplink)転送は、
の区間を有する無線フレーム(radio frame)で構成される。ここで、無線フレームは、各々、
の区間を有する10個のサブフレーム(subframe)で構成される。
の増加する順に番号が付けられて、無線フレーム内で
の増加する順に番号が付けられる。1つのスロットは、
(個)の連続するOFDMシンボルで構成され、
は、用いられるヌメロロジおよびスロット設定(slot configuration)によって決定される。サブフレームにおいて、スロット
の開始は、同一サブフレームにおけるOFDMシンボル
の開始と時間的に整列(アラインメント)される。
(個)のサブキャリアで構成され、一つのサブフレームが14・2μ(個)のOFDMシンボルで構成されることを例示的に記述するが、これに限定されるものではない。
(個の)サブキャリアで構成される一つまたは複数のリソースグリッドおよび
(個)のOFDMシンボルによって説明される。ここで、
である。上記
は、最大転送帯域幅を示し、これは、ヌメロロジだけでなく、アップリンクとダウンリンクの間でも異なることができる。
およびアンテナポートpに対するリソースグリッドの各要素は、リソース要素(resource element)と呼ばれ、インデックス対
により一意に(固有的に)識別される。ここで
は、周波数領域上のインデックスであり、
は、サブフレーム内におけるシンボルの位置を指す。スロットにおいてリソース要素を指すときは、インデックス対
が使用される。ここで、
である。
およびアンテナポートpに対するリソース要素
は、複素値(complex value)
に該当する。混同(confusion)される危険性がない場合、または、特定のアンテナポートもしくはヌメロロジが特定されていない場合には、インデックスpおよび
は、ドロップ(drop)されることができ、その結果、複素値は、
または
になることができる。
(個の)連続したサブキャリアとして定義される。周波数領域上で、物理リソースブロックは、0から
までの番号が付けられる。このとき、周波数領域上の物理リソースブロック番号(physical resource block number)
とリソース要素
との間の関係は、数式(1)のように与えられる。
までの番号が付けられる。
N_t = N_sym×N_RB×N_SC×Q_m
N_c2 = N_t − N_c1
次に、multiple UCI on long PUCCHをサポートするためのリソースを決定する方法について注意深く見る。
Claims (15)
- 無線通信システムにおいて物理アップリンク制御チャネル(Physical Uplink Control CHannel;PUCCH)上で複数のアップリンク制御情報(Uplink Control Information;UCI)を送信する方法であって、端末によって実行される方法は、
前記複数のUCIを送信するためのPUCCHに関連する第1制御情報を基地局から受信するステップと、
前記第1制御情報に基づいて、前記複数のUCIに対する符号化されたビット(coded bit)の数を示す第1パラメータを決定するステップと、
前記複数のUCIは、第1パート(part)および第2パートのうちの少なくとも一つを有するチャネル状態情報(Channel State Information;CSI)を有し、
前記第1パラメータおよび前記第1パートのサイズの決定に関連する第2制御情報に基づいて、前記第1パートのサイズを決定するステップと、
前記複数のUCIを前記PUCCH上で、前記基地局に送信するステップと、を有し、
前記第2制御情報は、前記第1パートのサイズを表す第2パラメータ、設定された最大の符号化率(maximum coding rate)を示す第3パラメータおよび変調次数(modulation order)を示す第4パラメータを有する、ことを特徴とする方法。 - 前記第1パートのサイズは、前記第1パラメータおよび前記第2制御情報のうちの最小値に決定される、ことを特徴とする請求項1に記載の方法。
- 前記第2制御情報は、前記第2パラメータを前記第3パラメータおよび前記第4パラメータでそれぞれ割った値に基づいて決定される、ことを特徴とする請求項2に記載の方法。
- 前記第1パートのサイズは、前記第1パートのペイロード(payload)のサイズである、ことを特徴とする請求項1に記載の方法。
- 前記第1制御情報は、前記PUCCHのシンボル数に関する情報および前記PUCCHのリソースブロック(Resource Block、RB)の数に関する情報を有する、ことを特徴とする請求項1に記載の方法。
- 無線通信システムにおいてPUCCH上でチャネル状態情報(Channel State Information;CSI)報告(report)を送信する方法であって、端末によって実行される方法は、
前記CSI報告を送信するためのPUCCHリソースに関連する情報を基地局から受信するステップと、
第1パートおよび第2パートのうちの少なくとも一つを有するCSIが前記第2パートを有する場合、前記CSI報告が特定のランク(rank)であると仮定することにより、前記CSI報告を送信するPUCCHリソースと前記PUCCHリソースにおけるリソースブロック(Resource Block;RB)の数とを決定するステップと、
前記決定に基づいて、前記CSI報告を前記PUCCH上で前記基地局に送信するステップと、を有する、ことを特徴とする方法。 - 前記CSI報告が複数ある場合、各CSI報告が特定のランクであると仮定することにより、CSI報告を送信するPUCCHリソースと前記PUCCHリソースにおけるリソースブロック(Resource Block;RB)の数とを決定する、ことを特徴とする請求項8に記載の方法。
- 前記特定のランクは、ランク−1である、ことを特徴とする請求項8に記載の方法。
- 無線通信システムにおいて物理アップリンク制御チャネル(Physical Uplink Control CHannel;PUCCH)上で複数のアップリンク制御情報(Uplink Control Information;UCI)を送信する端末であって、
無線信号を送受信するためのRFモジュール(Radio Frequency module)と、
前記RFモジュールと機能的に接続されているプロセッサと、を有し、
前記プロセッサは、
前記複数のUCIを送信するためのPUCCHに関連する第1制御情報を基地局から受信し、
前記第1制御情報に基づいて、前記複数のUCIに対する符号化されたビット(coded bit)の数を示す第1パラメータを決定し、
前記複数のUCIは、第1パート(part)および第2パート(part)のうちの少なくとも一つを有するチャネル状態情報(Channel State Information;CSI)を有し、
前記第1パラメータおよび前記第1パートのサイズの決定に関連する第2制御情報に基づいて、前記第1パートのサイズを決定し、
前記複数のUCIを前記PUCCH上で、前記基地局に送信する、ように設定され、
前記第2制御情報は、前記第1パートのサイズを表す第2パラメータ、設定された最大の符号化率(maximum coding rate)を示す第3パラメータおよび変調次数(modulation order)を示す第4パラメータを有する、ことを特徴とする端末。 - 前記第1パートのサイズは、前記第1パラメータおよび前記第2制御情報のうちの最小値に決定される、ことを特徴とする請求項11に記載の端末。
- 前記第2制御情報は、前記第2パラメータを前記第3パラメータおよび前記第4パラメータでそれぞれ割った値に基づいて決定される、ことを特徴とする請求項12に記載の端末。
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